Jay Z evolved from rapping about his difficult relationship with his own father to gushing about his daughter, Blue Ivy. Her voice is even featured on several of his songs. We’re looking forward to the day twins Rumi and Sir start collaborating, too. Since the addition of the twins to the family, Jay has become a totally hands-on father he admitted in a recent interview and explained that, although he adores daughter Blue Ivy, the rapper, 48, rarely helped when it came to things like diaper duty. Now that he is a dad to twins he does it all. He changes diapers, feeds them and tucks them in during naptime.